C.4 Essay Test Item Examples cont'd

DOE-HDBK-1204-97

APPENDIX C

TEST ITEM EXAMPLES

(2)

(a)

Reactor coolant system (RCS) differential pressure across each steam

generator (SG) is sensed.

(b)

LSSS @ 100% is 95% of max flow.

(c)

Protects the core against departure from nucleate boiling (DNB).

(3)

(a)

Secondary differential pressure across each SG is sensed.

(b)

LSSS @ 100% is 135 psid.

(c)

Protects against departure from nucleate boiling (DNB) and high linear

heat rate.

Unsatisfactory:

Test item:

For each of the reactor protective system trips listed below, state the sensed

parameter, the limiting safety system setting, and what each trip protects against.

Only the LSSS that would apply at 100% power is required. (3.5 points)

(a)

High power level (1.0)

(b)

Low reactor coolant flow (1.0)

(c)

Steam generator differential pressure (1.0)

(d) Containment high pressure (sensed parameter is NOT required). (0.5)

C-13